Input: touchscreen - use __maybe_unused instead of ifdef around suspend/resume

Use __maybe_unused instead of ifdef guards around suspend/resume
functions, in order to increase build coverage and fix build warnings.

Signed-off-by: Jingoo Han <jg1.han@samsung.com>
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
diff --git a/drivers/input/touchscreen/cy8ctmg110_ts.c b/drivers/input/touchscreen/cy8ctmg110_ts.c
index 5bf1aee..f2119ee 100644
--- a/drivers/input/touchscreen/cy8ctmg110_ts.c
+++ b/drivers/input/touchscreen/cy8ctmg110_ts.c
@@ -291,8 +291,7 @@
 	return err;
 }
 
-#ifdef CONFIG_PM_SLEEP
-static int cy8ctmg110_suspend(struct device *dev)
+static int __maybe_unused cy8ctmg110_suspend(struct device *dev)
 {
 	struct i2c_client *client = to_i2c_client(dev);
 	struct cy8ctmg110 *ts = i2c_get_clientdata(client);
@@ -306,7 +305,7 @@
 	return 0;
 }
 
-static int cy8ctmg110_resume(struct device *dev)
+static int __maybe_unused cy8ctmg110_resume(struct device *dev)
 {
 	struct i2c_client *client = to_i2c_client(dev);
 	struct cy8ctmg110 *ts = i2c_get_clientdata(client);
@@ -319,7 +318,6 @@
 	}
 	return 0;
 }
-#endif
 
 static SIMPLE_DEV_PM_OPS(cy8ctmg110_pm, cy8ctmg110_suspend, cy8ctmg110_resume);